113442131 has 8 divisors (see below), whose sum is σ = 123840624. Its totient is φ = 103057920.

The previous prime is 113442097. The next prime is 113442143. The reversal of 113442131 is 131244311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113442131 is a prime.

It is a super-2 number, since 2×113442131² = 25738234171642322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113442151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19631 + ... + 24743.

It is an arithmetic number, because the mean of its divisors is an integer number (15480078).

Almost surely, 2^113442131 is an apocalyptic number.

113442131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113442131 is a deficient number, since it is larger than the sum of its proper divisors (10398493).

113442131 is a wasteful number, since it uses less digits than its factorization.

113442131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141.

The product of its digits is 288, while the sum is 20.

The square root of 113442131 is about 10650.9216033168. The cubic root of 113442131 is about 484.0885293857.

Adding to 113442131 its reverse (131244311), we get a palindrome (244686442).

It can be divided in two parts, 113 and 442131, that added together give a palindrome (442244).

The spelling of 113442131 in words is "one hundred thirteen million, four hundred forty-two thousand, one hundred thirty-one".